54 
BULLETIN OF THE BUREAU OF FISHERIES 
In full accord with the results obtained in 1922, these experiments show that 
a very high percentage of the returns were taken in Ikatan Bay where the fish had 
been liberated, and that, next to Ikatan Bay, the greatest number of tagged fish 
was reported from Morzhovoi Bay. In the report on the experiments of 1922 
the senior author stated that “Recaptures from all the tagging experiments, with- 
out exception, indicate that the salmon tarry in this vicinity for a considerable 
period, often from two to three weeks, passing back and forth from Ikatan to 
Morzhovoi Bays and repeatedly running the gauntlet of all the traps.” 
It is interesting to compare the results obtained in the tagging done at the 
P. E. Harris trap No. 5 on July 10 with the results obtained in the five experi- 
ments for which fish were taken from traps operated by the Pacific American 
Fisheries. This experiment was made at the suggestion of Superintendent Nicholls 
of the P. E. Harris Co. The trap (P. E. Harris No. 5) is located very near the 
southern entrance to False Pass — in fact, is as near to the entrance as the extremely 
strong tidal currents will permit. In this location it is natural to suppose that 
the fish taken were approaching the entrance of the strait with the intention of 
passing through. Favorable currents would be expected to facilitate their passage 
through, and the tagging was therefore done on the beginning of the flood tide 
which sweeps up through the pass and is only met by the flood tide from the Bering 
Sea side well toward the northern entrance. 
Although there is no appreciable difference in the time required for the fish 
tagged in this experiment to reach Bristol Bay (see Table 32, p. 53), there is a very 
significant difference in the percentage of fish that ultimately reached Bristol Bay 
when compared with the results of other experiments started in Ikatan Bay. It is 
apparent that a much larger percentage of the fish tagged in the P. E. Harris trap 
No. 5 escaped the traps of Ikatan Bay and proceeded through False Pass and on to 
Bristol Bay. The percentages are as follows : 
Table 33.- — Fish tagged in Ikatan Bay, recaptured there and in Bristol Bay 
Point where tagged 
Number 
tagged 
Ikatan Bay 
Bristol Bay 
Number 
Percent- 
age 
Number 
Percent- 
age 
Other traps in Ikatan Bay 
2,376 
326 
880 
40 
37 
12.3 
111 
58 
4.7 
17.8 
P. E. Harris trap No. 5 
It is instructive to compare the results of this experiment with those obtained 
from the tagging done in the Pacific American Fisheries trap No. 13 on the same 
date and in the Pacific American Fisheries trap No. 2 the next day (July 11). These 
two Pacific American Fisheries traps are located some distance from the southern 
entrance to the pass. The two experiments were started so nearly simultaneously 
with the one in P. E. Harris trap No. 5 that they might reasonably have been 
expected to yield approximately the same results. However, the percentage of 
fish returned from Ikatan and Morzhovoi Bays is approximately twice as great in 
the case of the experiments started in the Pacific American Fisheries traps, while 
